Framing-tool.



J. N. WHITLOCK. FRAMING TOOL.

APPLIoATIoN FILED 11.511,28, 1910.

Patented Sapt. 26, 1911.

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CuLUMBIA PLANODMPII co.. WASHINGTON. n. C,

JOI-IN N. WHITLOCK, 0F AUBREY, TEXAS.

FRAMING-TOOL.

Specification of Letters Patent.

Patented Sept. 26, 1911.

Application filed March 28, 1910. Serial No. 551,967.

To all whom it may concern:

Be it known that I, JOHN N. VrrrrLocK, a citizen of the United States, residing at Aubrey, in the county of Denton and State of vTeXas, have invented a new and use't'ul Framing-Tool, of which the following is a specification.

This invention has relation to framing tools and it consists in the novel construe tion and arrangement of its parts as hereinafter shown and described.

The obj ect of the invention is to provide a simple and convenient tool adapted to be easily handled for laying oil rafters, stair carriages and the like and which is provided with several sets of scales or tables which may be conveniently used in connection with the tool to assist one in readily arriving at desired dimensions of cuts to be made in timber to accomplish desired construction.

With the above object in view the tool comprises side bars having clamping devices at their opposite ends and a blade slidably mounted at one end of the bars and blades pivotally mounted at the other ends of the bars. The pivoted blades are provided with inter-locking devices and when in inter-locked relation have outer edge portions which are at a right angle to each other and form a square.

In the accompanying drawing -Figure 1 is a side elevation of the tool. Fig. 2 is an edge elevation of the same. Fig. 3 is a side elevation of that end portion of the tool at which the pivoted blades are located showing the said blades in extended relation. Fig. 4 is a side elevation of the tool showing the reverse side of the pivoted blades from that illustrated in Fig. 3. Fig. 5 is a view of one side of the sliding blade. Fig. 6 is a view of the opposite side of the sliding blade. Fig. 7 is a view illustrating the manner in which the tool is used 'for laying oif a rafter. Fig. 8 is a view illustrating the manner in which the tool is used for laying off a stair carriage.

Structurally the framing tool consists ot' side bars 1 which are provided at their ends with clamping bolts or devices 2. A blade 3 is provided with an elongated slot 4 `which receives the bolt 2 at one of the ends of the side bars 1 and the blade 3 will be referred to in this specification as the sliding blade. Blades 5 and 6 are pivoted upon the bolts upon the other ends of the bars 1 and are provided with interlocking means whereby the said blades may be used conjointly as a .framing board. The interlocking means consist or' a headed pin 7 mounted upon the blade 5 and which is adapted to enter and engage the edge portion of a key hole slot 8 provided in the blade G. The blades 3, 5 and (S are located between the bars 1 and consequently when the said bars are drawn together by the clamping devices 2 the inner surfaces of the bars bind against the blades and hold the saine in adjusted position.

Fig. S of the drawing illustrates the inanner in which the tool is used for the purpose of laying oli' stair mrriages. ln this view it 70 will be seen that the pivoted blades are secured together in distended relation and are secured between the bars 1 so that the outer edge of one o't' the said bars together with the longitudinal edges of the bars are at an angle equal to the angle of pitch of the stair carriage and the outer edge a of one of the pivoted blades may be used for marking oil' the tread upon lthe carriage while the other edge may be used :for laying oil' the rise of 80 the carriage. The sliding blade 3 is shifted along the bars 1 and secured in alinement with the same so that its inner end when one tread is being laid oil will indicate upon the carriage where the apex of the angle between the next tread and rise will occur. Therefore in laying oi a stair carriage the outer edges of both pivoted blades are used and the inner ends of the sliding blade is used as a means for indicating the points along the carriage at which the intersections between the rises and treads will occur.

Fig. 7 of the drawing indicates the manner in which the tool is used for laying off hip and valley rafters. The outer edge of one of the pivoted blades may be used to indicate the plumb cut as at a while the outer edge b of the other pivoted blade may be used to indicate the level cut. The sliding blade 3 may be so positioned with relation* 100 to the bars 1 as to indicate the cheek cut if such is to be provided upon the rafter.

The several blades are provided upon their opposite sides with numerous scales and tables which facilitate the work of a framer in determining his angles and cuts upon timbers in almost any kind of joiner work, for instance the table 10 indicates the cuts and lengths of common rafters in feet,

inches and sixteenths and the table l1 indi- 110 cates the cuts and lengths of hip rafters in feet, inches and sixteenths. The table 12 is designed to be used for laying polygons within a circle and is used by determining the diameter of the circle which is to be divided into a predetermined number of equal sides. For example if a circle four inches in diameter is to be divided into a polygon having seven equal sides the scale 13 (indicated enlarged in dotted lines adjacent one end of the blade in Fig. et) is consulted and dividers or other measuring implements may be used and upon the line where the numeral 7 occurs in the scale four points are counted off and the dividers are spread to the extent of the distance between the extremes of these points. It will be found that when this distance is laid Off about the circumference of a circle four inches in diameter it will be divided into seven equal parts. rllhe table 14; may be used for laying off cuts for Octagon rafters. rlhis table includes scales giving the rise per foot of the run of the rafter the length per foot run of Octagon hip rafters the side cut of Octagon hip rafters and the side cut of Octagon jack rafters and also the dierence in length of space jack rafters.

The sliding blade 3 is provided upon one side with a series of graduations 15 which may be used to indicate the side cuts of hip rafters and upon the other side with graduations 16 which may be used to lay oif side cuts of jack rafters. In other words the opposite surfaces of all of the blades may be employed for holding tables germane to the character of work for which the tool is designed. The examples of the use ofthe tool are only a few of the uses to which the tool may be applied and it is apparentthat with such a tool almost any kind of work may be quickly and accurately laid off.

. Having described the invention what I claim as new and desire to secure by Letters Patent is: l

A framing tool comprising a bar, blades of uniform shape and dimensions pivotally connected to the bar at the same point, and lying in different parallelplanes and adapted to overlap each other along their entire length, said blades carrying means for fixing the blades with relation to each other and means located at the point of pivotal connection between the blades and the bar for fixing the blades with relation to the bar.

ln testimony that l claim the foregoing as my own7 l have hereto affixed my signature in the presence of two witnesses.

JOHN N. VVHITLOCK.

' lVitnesses:

R. C. MOGRAW, C. C. WHITLOOK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C." 

